For those of you who want an easy way to follow the 2010 World Cup scores, GoodReflex has developed a very simple World Cup 2010 Live Feeder extension. The extension adds a toolbar (GoodReflex) between your Bookmarks toolbar and the tab bar. Since this is a toolbar it is very easy to switch on or off (handy for work). Clicking the soccer ball on the left will take you to the GoodReflex Blog. Note: This extension has not been reviewed by Mozilla so you will see a warning on the AMO page.You may still install the add-on. I have had…